http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55502
Bug #: 55502 Summary: gcc.c-torture/execute/builtins/memcpy-chk.c execution failures with -fsanitize=address Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: sanitizer AssignedTo: unassig...@gcc.gnu.org ReportedBy: howa...@nitro.med.uc.edu CC: do...@gcc.gnu.org, dvyu...@gcc.gnu.org, ja...@gcc.gnu.org, k...@gcc.gnu.org Using... make -k check-gcc RUNTESTFLAGS="--target_board=unix'{-fsanitize=address}'" on x86_64-apple-darwin12 produces execution failures in... FAIL: gcc.c-torture/execute/builtins/memcpy-chk.c execution, -O1 FAIL: gcc.c-torture/execute/builtins/memcpy-chk.c execution, -O2 FAIL: gcc.c-torture/execute/builtins/memcpy-chk.c execution, -O3 -fomit-frame-pointer FAIL: gcc.c-torture/execute/builtins/memcpy-chk.c execution, -O3 -fomit-frame-pointer -funroll-loops FAIL: gcc.c-torture/execute/builtins/memcpy-chk.c execution, -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions FAIL: gcc.c-torture/execute/builtins/memcpy-chk.c execution, -O3 -g FAIL: gcc.c-torture/execute/builtins/memcpy-chk.c execution, -Os FAIL: gcc.c-torture/execute/builtins/memcpy-chk.c execution, -Og -g FAIL: gcc.c-torture/execute/builtins/memcpy-chk.c execution, -O2 -flto -flto-partition=none FAIL: gcc.c-torture/execute/builtins/memcpy-chk.c execution, -O2 -flto which are of the form... Executing on host: /sw/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/gcc/xgcc -B/sw/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/gcc/ /sw/src/fink.build/gcc48-4.8.0-1000/gcc-4.8-20121127/gcc/testsuite/gcc.c-torture/execute/builtins/memcpy-chk.c /sw/src/fink.build/gcc48-4.8.0-1000/gcc-4.8-20121127/gcc/testsuite/gcc.c-torture/execute/builtins/memcpy-chk-lib.c /sw/src/fink.build/gcc48-4.8.0-1000/gcc-4.8-20121127/gcc/testsuite/gcc.c-torture/execute/builtins/lib/main.c -fno-diagnostics-show-caret -w -O1 -fno-tree-loop-distribute-patterns -lm -fsanitize=address -o /sw/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/gcc/testsuite/gcc/memcpy-chk.x1 (timeout = 300) PASS: gcc.c-torture/execute/builtins/memcpy-chk.c compilation, -O1 Setting LD_LIBRARY_PATH to :/sw/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/gcc::/sw/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/gcc ================================================================= ==66781== ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7fff53c70a44 at pc 0x10bf90e84 bp 0x7fff53c709f0 sp 0x7fff53c709e8 WRITE of size 1 at 0x7fff53c70a44 thread T0 #0 0x10bf90e83 (/sw/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/gcc/testsuite/gcc/memcpy-chk.x1+0x100004e83) #1 0x0 Address 0x7fff53c70a44 is located at offset 52 in frame <test4> of T0's stack: This frame has 1 object(s): [32, 52) 'buf3' HINT: this may be a false positive if your program uses some custom stack unwind mechanism or swapcontext (longjmp and C++ exceptions *are* supported) Shadow byte and word: 0x1fffea78e148: 4 0x1fffea78e148: 04 f4 f3 f3 f3 f3 00 00 More shadow bytes: 0x1fffea78e128: 00 00 00 00 00 00 00 00 0x1fffea78e130: 00 00 00 00 00 00 00 00 0x1fffea78e138: 00 00 00 00 00 00 00 00 0x1fffea78e140: 00 00 f1 f1 f1 f1 00 00 =>0x1fffea78e148: 04 f4 f3 f3 f3 f3 00 00 0x1fffea78e150: 00 00 00 00 00 00 00 00 0x1fffea78e158: 00 00 00 00 00 00 00 00 0x1fffea78e160: 00 00 00 00 00 00 00 00 0x1fffea78e168: 00 00 00 00 00 00 00 00 Stats: 0M malloced (0M for red zones) by 0 calls Stats: 0M realloced by 0 calls Stats: 0M freed by 0 calls Stats: 0M really freed by 0 calls Stats: 0M (0 full pages) mmaped in 0 calls mmaps by size class: mallocs by size class: frees by size class: rfrees by size class: Stats: malloc large: 0 small slow: 0 ==66781== ABORTING FAIL: gcc.c-torture/execute/builtins/memcpy-chk.c execution, -O1